A transverse film drawing machine

Abstract

The utility model belongs to polytetrafluoroethylene microporous membrane processing technical field, concretely relates to a kind of transverse film drawing machine, including the rack of the vertical partition in middle setting, the rack of the partition one side is equipped with unwinding device, the rack on the other side of the partition is equipped with heating structure, heating structure below is equipped with film drawing table, the film drawing table end part with the rack is fixed, two adjusting holes are symmetrically opened on the film drawing table, since stretching belt ring is connected with connecting seat by movable seat cooperation screw rod and guide rod, when the microporous membrane of different width is stretched, user can rotate screw rod by turntable, the guiding effect of guide rod is passed through the thread cooperation of screw rod, movable seat is driven along the length direction of screw rod, the position of movable seat is adjusted, the film drawing structure of the existing transverse film drawing equipment generally does not have position adjusting function, to avoid the problem of inconvenient use.

Description

Technical Field

[0001] This utility model belongs to the field of polytetrafluoroethylene microporous membrane processing technology, specifically relating to a transverse membrane stretching machine. Background Technology

[0002] In the preparation process of polytetrafluoroethylene (PTFE) microporous membranes, after the degreased substrate is longitudinally stretched to obtain a longitudinally stretched base membrane, it still needs to be transversely stretched. After transverse stretching, it is then sintered and cured to obtain the PTFE microporous membrane. Therefore, the transverse stretching process is one of the key steps.

[0003] The existing transverse film stretching equipment generally lacks a position adjustment function and cannot be adjusted according to the width of the polytetrafluoroethylene microporous membrane, making the existing transverse film stretching equipment very inconvenient to use. Utility Model Content

[0004] The purpose of this utility model is to provide a transverse film stretching machine with a simple structure and reasonable design in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A transverse film stretching machine includes a frame with a vertical partition in the middle. An unwinding device is installed on one side of the frame, and a heating structure is installed on the other side of the frame. A film stretching table is located below the heating structure, and its end is fixed to the frame. Two adjustment holes are symmetrically opened on the film stretching table. Two connecting seats are symmetrically installed on the frame below the adjustment holes. A screw threaded to the top of each connecting seat is threaded through it. A movable seat is rotatably connected to the end of the screw thread near the bottom of the film stretching table. Two pulleys are rotatably connected to the movable seat. A common tension belt ring is fitted on the two pulleys. The top of the tension belt ring extends through the adjustment holes to above the film stretching table. A pressure roller is rotatably connected above the tension belt ring. A motor is installed on the side of the movable seat away from the pulleys.

[0007] As a further optimization of this utility model, two arc-shaped grooves are symmetrically opened on the frame, and the unwinding device includes an unwinding shaft whose end is rotatably connected to the frame through the arc-shaped groove, and a polytetrafluoroethylene microporous membrane roll is sleeved on the unwinding shaft.

[0008] As a further optimization of this utility model, a crossbar is provided inside the frame above the unwinding shaft. The end of the crossbar is fixed to the inner wall of the frame. A rotating arm is rotatably connected to the middle section of the crossbar. A damping roller is rotatably connected to the end of the rotating arm away from the crossbar. The damping roller overlaps the outer surface of the polytetrafluoroethylene microporous membrane roll. Torsion springs are sleeved on the crossbars on both sides of the rotating arm. One end of the torsion spring is fixed to the crossbar, and the other end of the torsion spring is fixed to the side wall of the rotating arm.

[0009] As a further optimization of this utility model, a connecting plate is fixedly connected to the frame above the film stretching table, a heating tube is fixedly inserted through the connecting plate, and a connecting flange is fixedly connected to the top of the heating tube.

[0010] As a further optimization of this utility model, a support shaft is horizontally arranged inside the frame between the crossbar and the film stretching table. The upper surface of the support shaft is level with the top of the film stretching table, and both ends of the support shaft are rotatably connected to the frame.

[0011] As a further optimization of this utility model, a guide rod is slidably provided on the connecting seat below the lead screw, and one end of the guide rod near the movable seat is fixedly connected to the side wall of the movable seat.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Since the tension belt ring is connected to the connecting seat through the movable seat, screw, and guide rod, when stretching microporous membranes of different widths, the user can rotate the screw through the turntable. Through the screw thread and the guiding action of the guide rod, the movable seat is driven to move along the length of the screw, and the position of the movable seat is adjusted. This avoids the problem that the existing transverse film stretching equipment generally does not have a position adjustment function, which leads to inconvenience in use.

[0014] 2. Inside the frame above the unwinding shaft, there is a rotating arm rotatably connected via a crossbar. A damping roller is rotatably connected to the bottom of the rotating arm. Under the elastic force of the torsion spring, the damping roller is always in contact with the outer surface of the polytetrafluoroethylene microporous membrane roll. This is used to limit the rotational speed of the polytetrafluoroethylene microporous membrane roll when it is subjected to traction, so as to avoid the problem of microporous membrane accumulation caused by unwinding the polytetrafluoroethylene microporous membrane roll too quickly, which would affect the subsequent lateral stretching of the microporous membrane. Attached Figure Description

[0015] Figure 1 This is a structural diagram of one side of the entire utility model;

[0016] Figure 2 This is a schematic diagram of the other side of the overall structure of this utility model;

[0017] Figure 3This is a schematic diagram of the connection structure of the crossbar, rotating arm and damping roller of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation structure of the pulley, belt ring and motor of this utility model.

[0019] In the diagram: 1. Frame; 2. Shock-absorbing pad; 3. Unwinding shaft; 4. PTFE microporous membrane roll; 5. Crossbar; 6. Rotating arm; 7. Torsion spring; 8. Damping roller; 9. Connecting plate; 10. Heating tube; 11. Connecting flange; 12. Film stretching table; 13. Adjusting hole; 14. Connecting seat; 15. Lead screw; 16. Guide rod; 17. Turntable; 18. Movable seat; 19. Pulley; 20. Motor; 21. Tension belt ring. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example

[0022] like Figure 1 - Figure 4 As shown, a transverse film stretching machine includes a frame 1 with a vertical partition in the middle. A shock-absorbing pad 2 is fixedly connected to the bottom of the frame 1. Two arc-shaped grooves are symmetrically opened on one side of the partition on the frame 1. An unwinding shaft 3 is arranged between the arc-shaped grooves. A polytetrafluoroethylene microporous membrane roll 4 is sleeved on the unwinding shaft 3. The two ends of the unwinding shaft 3 are rotatably connected to the frame 1 through the two arc-shaped grooves, so that the unwinding shaft 3 can be taken out from the top opening of the arc-shaped groove, which facilitates the replacement of the polytetrafluoroethylene microporous membrane roll 4.

[0023] A crossbar 5 is installed inside the frame 1 above the unwinding shaft 3. The end of the crossbar 5 is fixed to the inner wall of the frame 1. A rotating arm 6 is rotatably connected to the middle section of the crossbar 5. A damping roller 8 is rotatably connected to the end of the rotating arm 6 away from the crossbar 5. The damping roller 8 overlaps the outer surface of the polytetrafluoroethylene microporous membrane roll 4. Torsion springs 7 are fitted on the crossbars 5 on both sides of the rotating arm 6. One end of the torsion spring 7 is fixed to the crossbar 5, and the other end of the torsion spring 7 is fixed to the side wall of the rotating arm 6. The torsion spring 7 is in a torsional state and can push the rotating arm 6 to rotate in the direction of the polytetrafluoroethylene microporous membrane roll 4 under its own elastic force, so that the damping roller 8 always fits against the polytetrafluoroethylene microporous membrane roll 4, limiting the rotation speed of the polytetrafluoroethylene microporous membrane roll 4 and avoiding the problem of microporous membrane accumulation caused by the polytetrafluoroethylene microporous membrane roll 4 being unwound too quickly.

[0024] A connecting plate 9 is fixedly installed on the top of the frame 1 on the other side of the partition. A heating tube 10 is fixedly inserted through the connecting plate 9. A connecting flange 11 is fixedly connected to the top of the heating tube 10. A film-stretching platform 12 is provided at the bottom of the heating tube 10. The end of the film-stretching platform 12 is fixed to the frame 1. A gap is left between the upper surface of the film-stretching platform 12 and the bottom of the heating tube 10 for the microporous membrane to pass through. When the microporous membrane is pulled along the upper surface of the film-stretching platform 12 by an external traction device, the heating tube 10 can be connected to an external hot air pipe through the connecting flange 11. Hot air is sprayed out from the bottom of the heating tube 10 and acts on the microporous membrane, which facilitates the subsequent lateral stretching of the microporous membrane.

[0025] Two adjustment holes 13 are symmetrically opened on the film stretching table 12. Two connecting seats 14 are symmetrically installed on the frame 1 below the adjustment holes 13. A screw 15 is threaded through the top of the connecting seat 14 and screwed to the connecting seat 14. A movable seat 18 is rotatably connected to the end of the screw 15 near the bottom of the film stretching table 12. A turntable 17 is fixedly connected to the end of the screw 15 away from the movable seat 18.

[0026] A guide rod 16 is slidably mounted on the connecting seat 14 below the lead screw 15. One end of the guide rod 16 near the movable seat 18 is fixedly connected to the side wall of the movable seat 18. This guide rod is used to limit and guide the connecting seat 14, so that when the user rotates the lead screw 15 through the turntable 17, the movable seat 18 can be driven to move along the length of the lead screw 15 through the thread action and the guiding action of the guide rod 16, thereby adjusting the position of the movable seat 18.

[0027] Two pulleys 19 are rotatably connected to the movable base 18. The same tension belt ring 21 is fitted on the two pulleys 19. The top of the tension belt ring 21 extends to the top of the film stretching table 12 through the adjustment hole 13. A pressure roller is provided above the tension belt ring 21 and is rotatably connected to the frame 1. A motor 20 is installed on the side of the movable base 18 away from the pulleys 19. The output ends of the two motors 20 rotate in opposite directions, so that the two motors 20 can drive the two tension belt rings 21 to rotate in opposite directions respectively, and cooperate with the pressure roller to stretch the microporous membrane passing through the upper surface of the film stretching table 12 laterally.

[0028] It should be noted that, in use, this type of transverse film stretching machine involves placing the polytetrafluoroethylene microporous membrane roll 4 onto the unwinding shaft 3, then mounting the end of the unwinding shaft 3 onto the frame 1 via an arc groove. This allows the outer end of the microporous membrane to be pulled out, passing over the support shaft, and then passing the microporous membrane end through the gap between the stretching belt ring 21 and the pressure roller. Finally, the microporous membrane end is fixed to the external winding device. At this time, the user connects the heating pipe 10 to the external hot air duct through the connecting flange 11, and the air is discharged through the bottom end of the heating pipe 10 to heat the microporous membrane. Simultaneously, the user starts the motor 20, which... The two stretching belt rings 21 rotate in opposite directions, working with the pressure rollers to stretch the microporous membrane laterally. Since the stretching belt rings 21 are connected to the connecting seat 14 via the movable seat 18, the lead screw 15, and the guide rod 16, when stretching microporous membranes of different widths, the user can rotate the lead screw 15 via the turntable 17. Through the thread of the lead screw 15 and the guiding action of the guide rod 16, the movable seat 18 is driven to move along the length of the lead screw 15, adjusting the position of the movable seat 18. This avoids the problem that existing transverse film stretching equipment generally does not have a position adjustment function, which leads to inconvenience in use.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A transverse film stretching machine, comprising a frame (1) with a vertical partition in the middle, wherein an unwinding device is installed on one side of the frame (1) of the partition, characterized in that: A heating structure is installed on the frame (1) on the other side of the partition. A film-pulling platform (12) is provided below the heating structure. The end of the film-pulling platform (12) is fixed to the frame (1). Two adjustment holes (13) are symmetrically opened on the film-pulling platform (12). Two connecting seats (14) are symmetrically installed on the frame (1) below the adjustment holes (13). A screw (15) is threaded through the top of the connecting seat (14) and screwed to the connecting seat (14). The screw (15) is close to the film-pulling platform. A movable seat (18) is rotatably connected to one end of the film stage (12). Two pulleys (19) are rotatably connected to the movable seat (18). The same tension belt ring (21) is fitted on the two pulleys (19). The top of the tension belt ring (21) extends to the top of the film stage (12) through the adjustment hole (13). A pressure roller is rotatably connected above the tension belt ring (21). A motor (20) is installed on the side of the movable seat (18) away from the pulleys (19).

2. The transverse film stretching machine according to claim 1, characterized in that: Two arc-shaped grooves are symmetrically opened on the frame (1). The unwinding device includes an unwinding shaft (3) whose end is rotatably connected to the frame (1) through the arc-shaped groove. A polytetrafluoroethylene microporous membrane roll (4) is sleeved on the unwinding shaft (3).

3. The transverse film stretching machine according to claim 1, characterized in that: A crossbar (5) is provided inside the frame (1) above the unwinding shaft (3). The end of the crossbar (5) is fixed to the inner wall of the frame (1). A rotating arm (6) is rotatably connected to the middle section of the crossbar (5). A damping roller (8) is rotatably connected to the end of the rotating arm (6) away from the crossbar (5). The damping roller (8) overlaps the outer surface of the polytetrafluoroethylene microporous membrane roll (4). Torsion springs (7) are sleeved on the crossbars (5) on both sides of the rotating arm (6). One end of the torsion spring (7) is fixed to the crossbar (5), and the other end of the torsion spring (7) is fixed to the side wall of the rotating arm (6).

4. A transverse film stretching machine according to claim 1, characterized in that: A connecting plate (9) is fixedly connected to the frame (1) above the film stretching table (12). A heating tube (10) is fixedly threaded through the connecting plate (9). A connecting flange (11) is fixedly connected to the top of the heating tube (10).

5. A transverse film stretching machine according to claim 3, characterized in that: A support shaft is horizontally arranged inside the frame (1) between the crossbar (5) and the film stretching table (12). The upper surface of the support shaft is level with the top of the film stretching table (12), and both ends of the support shaft are rotatably connected to the frame (1).

6. A transverse film stretching machine according to claim 1, characterized in that: A guide rod (16) is slidably passed through the connecting seat (14) below the lead screw (15), and one end of the guide rod (16) near the movable seat (18) is fixedly connected to the side wall of the movable seat (18).

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